Finding the Fourth Proportional to 4,259,960,728.40, 6,386,917,783.80 and 1,638,751,998.80
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Solution
The fourth proportional to 4,259,960,728.40, 6,386,917,783.80 and 1,638,751,998.80 is: 2,456,964,970.26
Step by Step Solution
- Step 1: Write the proportion equation
4,259,960,728.40 : 6,386,917,783.80 = 1,638,751,998.80 : x - Step 2: Convert to fraction form
4,259,960,728.40/6,386,917,783.80 = 1,638,751,998.80/x - Step 3: Cross multiply
4,259,960,728.40x = 6,386,917,783.80 × 1,638,751,998.80 - Step 4: Simplify right side
4,259,960,728.40x = 10,466,574,284,373,516,288 - Step 5: Solve for x
x = 10,466,574,284,373,516,288/4,259,960,728.40 - Step 6: Final answer
x = 2,456,964,970.26
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.